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Power Plant Engineering

Power Plant Engineering
The predominant isotope of the naturally occurring element is

U₂₃₈
U₂₃₅
Pu₂₃₃
Pu₂₃₉

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Power Plant Engineering
A moderator

Accelerates neutrons
None of these
Absorbs neutrons
Does not absorb neutrons

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Power Plant Engineering
U238 will undergo fission by

High energy(fast) neutrons alone
Medium energy neutrons
Low energy(slow) neutrons alone
Either fast or slow neutrons

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Power Plant Engineering
A nuclear reactor is said to be critical when the neutron population in the reactor core is

Decreasing from the specified value
Rapidly increasing leading to the point of explosion
Reduced to zero
Constant

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Power Plant Engineering
Reflector in nuclear plants is used to

Return the neutrons back into the core
Conserve energy
Shield the radioactivity completely
Check pollution

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Power Plant Engineering
For economical operation of a nuclear plant

Moderator should be used
Coolant should be employed
Used fuel should be reprocessed
Control rods should be used

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